单项选择题

What does the new system enable farmers to do

A．Produce larger vegetables.
B．Transport produce more quickly.
C．Grow crops in nontraditional climates.
D．Keep vegetables fresher for a longer perio
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单项选择题
Why is it good to visit the everglades in winter
A．There fire fewer tourists.
B．The entrance fees are lower.
C．The animals are more active.
D．There are fewer insects.
单项选择题
What is the main purpose of the tour
A．To inform visitors of the park's history.
B．To provide an overview of the park's main attractions.
C．To show visitors remote places in the park.
D．To teach visitors how best to photograph wildlif
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